Stoloniferous perennial. Basal leaves with petioles 5–45 cm long, glabrous; lamina palmatisect, 5–13 cm diam., glabrous; ultimate segments 0.5–2 mm wide. Flowering stems 10–30 cm high, 1–3-flowered, glabrous or pilose just below flowers. Sepals 5, spreading, 3–6.5 mm long, glabrous or shortly ciliate near basal margin. Petals 8–16, narrowly obovate to obovate, 5–13 mm long, yellow, obtuse or emarginate; nectary near petal-base, c. 1 mm long, with lobe rounded to truncate, free for up to 1/4 its length. Stamens 20–45. Pistils 25–45. Receptacle shortly hirsute in stamen zone, hairs scattered between achenes. Achenes ± lenticular, 2–4 mm long; lateral faces smooth or somewhat warty, sometimes indistinctly rippled; beak reflexed, c. 1/4–1/3 as long as achene-body.
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